Quicken Combine Depth and Uniform Value Polygons - D-Flow Flexible Mesh - Delft3D
intro story D-Flow FM
D-Flow Flexible MeshD-Flow Flexible Mesh (D-Flow FM) is the new software engine for hydrodynamical simulations on unstructured grids in 1D-2D-3D. Together with the familiar curvilinear meshes from Delft3D 4, the unstructured grid can consist of triangles, pentagons (etc.) and 1D channel networks, all in one single mesh. It combines proven technology from the hydrodynamic engines of Delft3D 4 and SOBEK 2 and adds flexible administration, resulting in:
An overview of the current developments can be found here. The D-Flow FM - team would be delighted if you would participate in discussions on the generation of meshes, the specification of boundary conditions, the running of computations, and all kinds of other relevant topics. Feel free to share your smart questions and/or brilliant solutions!
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Quicken Combine Depth and Uniform Value Polygons
I'm currently trying to generate individual .rgh roughness files via Quicken for multiple sub-domains in our estuary model. Each sub-domain is divided into regions of approximately equal roughness values. Therefore, the floodplain, river channel, and coastal nearshore regions each have a single .pol file with multiple polygons defined within each file (roughness areas are often not contiguous).
When I open one of this .pol files (floodplain for example) along with the respective sub-domain grid and depth file, I'm unable to change the depths within all the polygons using the Operations --> Combine Depth and Uniform Value --> Change Depth to Max of Depth or Uniform Depth operation. In other words, only depths within one of the polygons changes. Depths in the other polygons remain the same. Are you only allowed to save one polygon per .poly file for use in operations?
My system is large enough that having to generate, save, and then open .pol files for every contiguous area of the map rather than .pol files based solely on roughness type would be an enormous hassle and very time consuming.
FYI, I'm using Delft3D Quicken version 4.17.06
Thanks,
Drew
When I open one of this .pol files (floodplain for example) along with the respective sub-domain grid and depth file, I'm unable to change the depths within all the polygons using the Operations --> Combine Depth and Uniform Value --> Change Depth to Max of Depth or Uniform Depth operation. In other words, only depths within one of the polygons changes. Depths in the other polygons remain the same. Are you only allowed to save one polygon per .poly file for use in operations?
My system is large enough that having to generate, save, and then open .pol files for every contiguous area of the map rather than .pol files based solely on roughness type would be an enormous hassle and very time consuming.
FYI, I'm using Delft3D Quicken version 4.17.06
Thanks,
Drew
Hi Drew,
A method that has worked for me in the past is to use the ‘internal diffusion’ tool.
If you have multiple polygons you can seed an individual polygon with a single depth value using the edit depth function. You can then use the tool to fill whole polygons with single values. It sounds like your case is quite complex, so I’m not sure how applicable this suggestion is, I would suggest doing a test case to explore the limits of this tool.
Personally, I prefer keeping rgh files simple as they are often a key calibration parameter. Alternatively you could base your rgh file on your bathymetry (.dep file), using Excel or Matlab to convert depth ranges into a defined roughness value.
Regards,
Jack
A method that has worked for me in the past is to use the ‘internal diffusion’ tool.
If you have multiple polygons you can seed an individual polygon with a single depth value using the edit depth function. You can then use the tool to fill whole polygons with single values. It sounds like your case is quite complex, so I’m not sure how applicable this suggestion is, I would suggest doing a test case to explore the limits of this tool.
Personally, I prefer keeping rgh files simple as they are often a key calibration parameter. Alternatively you could base your rgh file on your bathymetry (.dep file), using Excel or Matlab to convert depth ranges into a defined roughness value.
Regards,
Jack